#include <stdio.h>

int main()
{
    int a,b,c,count = 0;
    printf("There are different methods for XM to distribute books to 3 readers:\n");
    for(a = 1;a <=5;a++)
    {
        for(b = 1; b<=5;b++)
        {
            for(c = 1;a!=b&&c<=5;c++)
            {
                if(c!=a&&c!=b)
                {
                    printf(count%8?"%2d:%d,%d,%d":"%2d:%d,%d,%d\n",++count,a,b,c);
                }

            }
        }
    }
    return 0;
}
//熊贤豪